| 摘要 |
PROBLEM TO BE SOLVED: To provide a runflat tire for restraining a tread lift at runflat time, and restraining lowering of vehicle handling stability. SOLUTION: This runflat tire is rimmed with a normal rim, and is virtually divided into a grounding central area being a range for separating by 25 % of a tread grounding width and a grounding outside area on the tire axis directional respective outsides of the grounding central area on the tire axis directional both sides with the tire equator as the center on a grounding surface for grounding a tread surface in a standard state of applying a normal load under normal internal pressure, and sets the ratio CL/SL of the land ratio CL of the grounding central area to the land ratio SL of the grounding outside area to 1.15 to 1.70, and sets the land ratio CL of the grounding central area to 60 to 95 %, and the land ratio SL of the grounding outside area to a range of 40 to 80 %. COPYRIGHT: (C)2004,JPO |
